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A027254
a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026703.
0
1, 10, 62, 384, 1999, 11214, 55349, 298990, 1442299, 7649710, 36470860, 191481848, 906843279, 4732185974, 22320602389, 116024453570, 545848582951, 2830099408460, 13291841251589, 68795053937132, 322730986944375, 1668347808464146, 7820327627947825, 40392358720899832
OFFSET
2,2
CROSSREFS
Sequence in context: A350644 A196632 A289799 * A370764 A159240 A268945
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 26 2019
STATUS
approved